Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7

Al Bacha, Sandy; Saitzek, Sébastien; McCabe, Emma E.; Kabbour, Houria

doi:10.1021/acs.inorgchem.2c03040

Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7

Al Bacha, Sandy; Saitzek, Sébastien; McCabe, Emma E.; Kabbour, Houria

Authors

Sandy Al Bacha

Sébastien Saitzek

Dr Emma McCabe emma.mccabe@durham.ac.uk
Associate Professor

Houria Kabbour

Abstract

We present a combined experimental and computational study on the recently reported oxysulfide Sr6Cd2Sb6S10O7. Our spectroscopy and photoelectrochemical measurements and tests for photocatalytic activity indicate the potential of Sr6Cd2Sb6S10O7 for photocatalytic applications. In particular, the transient photocurrent response shows a reproducible photo-generated current which depends on light intensity and which indicates an efficient electron−hole separation upon visible light illumination. Density functional theory calculations, combined with crystal orbital Hamiltonian population analysis, give insights into the electronic structure of Sr6Cd2Sb6S10O7 and the origin of its physical properties. Our comprehensive investigation into Sr6Cd2Sb6S10O7 reveals the roles of its polar structure, polar Sb3+ coordination environments, and the 5s2 lone pair in making this compound a potential candidate for solar water splitting photocatalysis.

Citation

Al Bacha, S., Saitzek, S., McCabe, E. E., & Kabbour, H. (2022). Photocatalytic and Photocurrent Responses to Visible Light of the Lone-Pair-Based Oxysulfide Sr6Cd2Sb6S10O7. Inorganic Chemistry, 61(46), 18611-18621. https://doi.org/10.1021/acs.inorgchem.2c03040

Journal Article Type	Article
Acceptance Date	Oct 18, 2022
Online Publication Date	Nov 7, 2022
Publication Date	Nov 21, 2022
Deposit Date	Nov 7, 2022
Publicly Available Date	Nov 8, 2023
Journal	Inorganic Chemistry
Print ISSN	0020-1669
Electronic ISSN	1520-510X
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	61
Issue	46
Pages	18611-18621
DOI	https://doi.org/10.1021/acs.inorgchem.2c03040
Public URL	https://durham-repository.worktribe.com/output/1186604

Files

Supporting Information (947 Kb)
PDF

Copyright Statement
Supporting Information

Accepted Journal Article (1.5 Mb)
PDF

Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.2c03040.